public ArchetypeField(string _name_, FieldType _type_)
{
if (_name_ == null) { Error.BadArg("Got null archetype parse_field name"); }
if (!Token.is_bare_multi_word(_name_)) { Error.BadArg("Got invalid parse_field name '{0}'", _name_); }
if (_type_ == null) { Error.BadArg("Got null FieldType"); }
name = _name_;
type = _type_;
// Initialize default_value with a suitable IObjField instance
//
// Yes, doing an switch on types in an OO system is often a code smell.
// Does anyone have an aesthetically better means of implementing Duck-Typing in C# prior to C# 4.0 ?
//
switch (_type_.semantic_type) {
case SemanticTypes.INT:
default_value = new FieldInt();
break;
case SemanticTypes.STRING:
default_value = new FieldString();
break;
case SemanticTypes.DECIMAL:
default_value = new FieldDecimal();
break;
case SemanticTypes.ID:
default_value = new FieldID();
break;
case SemanticTypes.LIST_INT:
default_value = new FieldListInt();
break;
case SemanticTypes.LIST_STRING:
default_value = new FieldListString();
break;
case SemanticTypes.LIST_DECIMAL:
default_value = new FieldListDecimal();
break;
case SemanticTypes.LIST_ID:
default_value = new FieldListID();
break;
default:
Error.BadArg("Got unknown field type '{0}'", _type_);
break;
}
// This method sets up an IObjField with the default C# value for the storage type
// (0, "", 0.0M, or an empty list of one of these).
// The additional constructors below (with additional args) are called
// when a default field value (or a non-empty default list) is specified,
// which is possibly the more common case.
}
public void add_field(string field_name, FieldType type)
{
IObjField field = null; // or perhaps: new FieldTempNull(this, field_name);
switch (type.semantic_type) {
case SemanticTypes.INT:
field = new FieldInt();
break;
case SemanticTypes.STRING:
field = new FieldString();
break;
case SemanticTypes.DECIMAL:
field = new FieldDecimal();
break;
case SemanticTypes.ID:
field = new FieldID();
break;
case SemanticTypes.LIST_INT:
field = new FieldListInt();
break;
case SemanticTypes.LIST_STRING:
field = new FieldListString();
break;
case SemanticTypes.LIST_DECIMAL:
field = new FieldListDecimal();
break;
case SemanticTypes.LIST_ID:
field = new FieldListID();
break;
default:
Error.BadArg("Got unknown field type '{0}'", type);
break;
}
fields[field_name] = field;
}